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Physics - MOST IMPORTANT RRB RPF Previous Year Questions

Practice real questions from previous year exams of RRB RPF.

📘 Light and Optics📚 Snell's Law

Q1

A UV light is passed from an optical fiber into air at an angle of 45° and the refractive index of the fiber is √2. The angle of refraction will be:

🎯 RRB RPF SI 2024

A.

30°

B.

90°

C.

0°

D.

60°

📘 Units and Dimensions📚 Important Physical Constants- Planck's constant, etc.

Q2

In the International System of Units (SI), which physical factor has the value 6.62607015×10⁻³⁴ joule-hertz⁻¹ ?

🎯 RRB RPF SI 2024

A.

Avogadro constant

B.

Von Klitzing constant

C.

Stefan–Boltzmann constant

D.

Planck's constant

📘 Light and Optics📚 Refractive Index

Q3

Select the correct statement about refractive index from among the following.

🎯 RRB RPF SI 2024

A.

Refractive index and reflection are the same phenomenon.

B.

The ratio of the speed of light in vacuum to its speed in a specific medium is called the refractive index.

C.

Refractive index is the sum of the angle of incidence and the angle of refraction.

D.

The ratio of the speed of light in a specific medium to the speed of light in vacuum is called the refractive index.

📘 Mechanical Properties of Solid📚 Strain and its Types

Q4

Which of the following is associated with strain?

🎯 RRB RPF SI 2024

A.

Raster

B.

Dimensionless

C.

Vector

D.

Scalar

📘 Light and Optics📚 Real Image and Virtual Image

Q5

Images those are formed on a screen is termed as:

🎯 RRB RPF SI 2024

A.

real in some cases

B.

virtual

C.

imaginary

D.

real

📘 Thermal Properties of Matter📚 Misc

Q6

The fourth state of matter 'PLASMA' is a/an ____________.

🎯 RRB RPF SI 2024

A.

state between liquid and gas

B.

neutral gas with fewer electrons

C.

ionized gas

D.

ionised gas with ions and electrons in an almost equal number

📘 Units and Dimensions📚 Conversion from one unit to other

Q7

1 erg is equal to ____________.

🎯 RRB RPF SI 2024

A.

10⁷ J

B.

10⁻⁷ J

C.

4.186 J

D.

10⁻⁵ J

📘 Magnetism📚 Misc

Q8

Which equation demonstrates that electricity, magnetism and light are all manifestations of the electromagnetic field?

🎯 RRB RPF SI 2024

A.

Kirchhoff's equation

B.

Ohm's equation

C.

Laplace equation

D.

Maxwell's equation

📘 Light and Optics📚 Plane Mirrors

Q9

Which of the following optical instruments creates colourful beautiful patterns due to multiple reflections in plane mirrors?

🎯 RRB RPF SI 2024

A.

Stereomicroscope

B.

Telescope

C.

Kaleidoscope

D.

Magnifying glass

📘 Scientists and their Inventions📚 Inventors and Inventions

Q10

The 130 th birth anniversary of Satyendra Nath Bose was observed on 1 January 2024. He was a renowned _________.

🎯 RRB RPF SI 2024

A.

literary

B.

zoologist

C.

physicist

D.

botanist

📘 Light and Optics📚 Power of Lens

Q11

A lens has a power of -0.25D. What is the nature and focal length of this lens?

🎯 RRB RPF SI 2024

A.

Convex lens of focal length –8 metres

B.

Concave lens of focal length –2 metres

C.

Convex lens of focal length 4 metres

D.

Concave lens of focal length –4 metres

📘 Force and Motion📚 Newton's Second Law of Motion

Q12

Which of the following is the most appropriate definition of Newton's second law?

🎯 RRB RPF SI 2024

A.

The force needed to extend or compress a spring by some distance is proportional to that distance.

B.

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.

C.

An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

D.

The acceleration of an object depends on the mass of the object and the amount of force applied.

📘 Natural Phenomenon📚 Dispersion of Light through a Prism

Q13

Select the correct sequence of colour observed when white light gets dispersed through a prism.

🎯 RRB RPF SI 2024

A.

Green, Indigo, Orange and Red

B.

Blue, Green, Yellow and Orange

C.

Violet, Blue, Green and Yellow

D.

Blue, Indigo, Green and Yellow

📘 Thermal Properties of Matter📚 Misc

Q14

Which statement is FALSE about particles of a matter?

🎯 RRB RPF SI 2024

A.

Motion of particles of matter is unaffected by any external forces.

B.

Particles of matter have space between them.

C.

Particles of matter attract each other.

D.

Particles of matter are continuously moving.

📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement

Q15

The SI unit of electric charge is:

🎯 RRB RPF SI 2024

A.

coulomb

B.

ampere

C.

ohm

D.

hertz

📘 Magnetism📚 Right-hand Rule

Q16

The right-hand rule of induced current was given by:

🎯 RRB RPF SI 2024

A.

Oersted

B.

Faraday

C.

Ampere

D.

Fleming

📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement

Q17

Which of the following is the standard unit of energy in the International System of Units (SI)?

🎯 RRB RPF SI 2024

A.

Joule (J)

B.

Pascal (Pa)

C.

Watt (W)

D.

Newton (N)

📘 Force and Motion📚 Newton's First Law of Motion

Q18

Which law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force?

🎯 RRB RPF SI 2024

A.

Newton's first law

B.

Newton's third law

C.

Newton's second law

D.

Dalton's law

📘 Thermodynamics📚 Heat Engine

Q19

On which of the following scientific principles does a steam engine work?

🎯 RRB RPF SI 2024

A.

Superconductivity

B.

Laws of thermodynamics

C.

Photoelectric effect

D.

Newton's laws of motion

📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement

Q20

What is the SI unit of luminous intensity?

🎯 RRB RPF SI 2024

A.

joules

B.

watt

C.

candela

D.

kelvin

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